package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import io.swagger.annotations.OAuth2Definition;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private DishMapper dishMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        /*开始分页查询*/
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());

        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        long total = page.getTotal();
        return new PageResult(total,page.getResult());


    }

    @Override
    public void save(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.insert(setmeal);

        Long id = setmeal.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(id));
        setmealDishMapper.insertBatch(setmealDishes);

    }

    @Override
    public void deleteBentch(Long[] ids) {
        //判断套餐是否在起售中
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            if(setmeal.getStatus() == StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        //删除套餐数据
        for (Long setmealId : ids) {
            setmealMapper.deleteById(setmealId);
            setmealDishMapper.deleteBySetmealId(setmealId);
        }

    }

    @Override
    public SetmealDTO getById(Long id) {
        Setmeal setmeal = setmealMapper.getById(id);
        SetmealDTO setmealDTO = new SetmealDTO();
        List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);
        BeanUtils.copyProperties(setmeal,setmealDTO);
        setmealDTO.setSetmealDishes(setmealDishes);
        return setmealDTO;
    }

    @Transactional
    @Override
    public void update(SetmealDTO setmealDTO) {
        //获取套餐数据
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        //修改套餐数据
        setmealMapper.update(setmeal);
        Long setmealId = setmealDTO.getId();
        setmealDishMapper.deleteBySetmealId(setmealId);
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> setmealDish.setSetmealId(setmealId));
        setmealDishMapper.insertBatch(setmealDishes);
    }
    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }
    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }



}
